Swivel electrical connecter



Nov. 19, 1935. FA w, FR|ES 2,021,504

sw-1vEL ELECTRICAL CONNECTER Filed May 2e, 1934 Patented Nov. 19,v 1935 UNITED STATES PATENT VOFFICE swl'vEL ooitruic'rsn y Y' v 625 Applica iciaim. (ci. 173-324) This, invention relates to a swivel electrical connecter, and more particularly to that'typewhich is intended to be mounted in the service cords or drop-lights, nat-irons, soldering-irons,4

and other electrical appliances where the service cord is liable 4to become twisted and entangled.

The object of the invention is to provide an electrical connecter to be mounted in a service or drop cord, whereby the cord may be twisted without entanglingthe same.

Another object of the invention is to provide a connecter of this kind whereby a perfect swivel connection is provided for the wires forming the circuit without in `any way interrupting orl impairing the eiiiciency of the service.

Another object of Ithe invention isto provide a swivel connecter that shall be simple of construction, contain few parts, and be easily installed in the line.A

Another object of the invention is to provideV a swivel connecter in which the wires are so held as to produce no strain. thereon, and which will prevent the wires from becoming loose or breaking ofi. z5 Withthese and other objects in view, my invention consists incertain new and useful con-- struction and combinations or parts as will here-v inafter be fully described and claimed, and further illustrated in the accompanying drawing;

which form a part hereof, and in which like iigures of reference referto corresponding parts inv `all of the views, and itis understood that slight changes may be made without departing from the spirit of the invention..

Inth'edrawinm vj l Figure 1 shows a side elevation of the device as attached in av service cable. 4 'i I Figure 2 is a'longitudinal tional view, taken on the center line. o

Figurer is a plan view partly insee' with vthe two upper casings removed therefrom. Figure 4 is a cross sectional'view, taken on the line 4-4 of Figure'l.

Figure 5 is a cross sectional view, taken on the '45 line 5--5 of Figure 1.

- Figure 6 is a cross sectional line 6 3 of Figure 1.A

Referring -to the drawing: The device comprises a four view,l`talren on the w vPart shell orcasthe two parts I3 and II being the same, and the two parts l2 and I3 being like each other; the parts I0 and II being clamped together bythe screws I4, and the parts I2 and I3 being clamped. 55l together by the screws I5, which have theirheads tion and ing, lll, Il, h2 and Il all 0f insulating material,

.- the electrical wires.

The swivel mechanism comprises a washer I6 ofinsulating material which is placed between the .abutting ends of tneparts |o^|| ana 12.-13, and said washer is forined with a central bore` 10 within which the pivot bolt I1 is rotatably mounted; said bolt I1 having secured thereon a circular block of insulating material I8 and the collector ring I9, and retained under the nuts 9 iipon said bolt I1 and incontact with the insulating washer l5' 33 which is similar to the washer I6, is aterxninal arm 20, the outer end of which is provided with the terminal binding screw 2l, having the usual washer and nut; while secured under the head of the pivot bolt l1 and in contact with the 20 washer I6 and head of the bolt I1 is asimilar terminal arm 22, lhaving the bindingscrew 3|.

Upon and outside of the collector ringjIS is rotatably mounted the collector ring 23, and/this collector ring 23 isprovided with a terminar arm 25 30 integral therewith and extending through a slot formed inthe washer I3. and is provided with the binding screw 24. t

:The `inner collector ring I9 is also formed with Aan integral terminal arm 25 which extends 30v the joining together of the casing parts, and in -binding screws. Y

such a manner that no strain is placed upon that part oi the bare wire that is retained'under the 40 It may here be stated that for clearness'in the drawing, the grooves 21 and some other portions of the depressions in the casings have been shown as slightly larger than theparts of the apparatus that "are to be mounted' therein, but in practice the grooves 21 will form a tight t for wires, so as to have a clamping action thereon. It will thus be seen that while the washer I6 is retained by the pivot bolt I1 in a ,rotary re- 50 lation with those parts of the devicewhich are mounted in the casings I0 and ||,.and that theI bolt I1 does not rotate upon 'the block I8, that the 'collectcr'ring 23 rotates uponthe block I8 and bolt I1, but ldoes 'not rotate with relation 55 formed the semi-circular g1 .,oves 35 to the parts -mounted within the casings I2 and I3, and the washer 33 is retained in a non-rotatable relation with these parts, but rotates upon composed of two members of insulating mate-v rial each having one squared end and one rounded end and each of said members comprising two parts detachably secured together, semi-circular wire receiving channels formed in each member Y adjacent their rounded ends, terminal receiving recesses formed in each member and communieating with the wire receiving channels and wire terminals located therein, one of said members providedwith a circular recess communicating withA the terminal recesses therein, an insulating washer located between the squared ends of said members and provided with an axial bearing and a slot, a second insulating-washer mounted within the circular recess and Iormed with an axial bearing and a slot, an insulating block located between said washers for spacing the same apart,

a pivot bolt extending through the bearings in 5 said washers and block, a pair of concentric co1- lector rings mounted in the circular recess around the insulating block in rotatable contact with each other, an4 arm secured'to and extending from the inner ring through the slot in the second 10 washer and secured to one of the wire terminals in said member, an arm secured to and extending from the outer ring through the slot in the first-washer and secured to one o1 the wire terminals in thelother member, and a terminal arm 15 'v located in each of lsaid members and having one end rotatably secured to the pivot bolt and the other endto the remaining wire terminal in each ot said members.

w.` rams. 2o 

